How long does sunscreen last?
Okay …….. there is no exact data on this. S0…….. assuming you haven’t left it in a hot car trunk, frozen it or otherwise gotten it really hot or cold, I tell my patients about a year.
The physical sunscreens tend to last longer and be more stable than the chemical sunscreens. And the powders like the Colorescience last a long time. If it were me, I’d probably use that one you have up over the next couple of months.
Hope this helps, Dr. I